Professor Brian Cox explains the first law of thermodynamics. He describes how energy is always conserved, never created or destroyed.

The questions in this quiz are suitable for GCSE physics students studying types of energy store, energy transfers, energy dissipation, the conservation of energy and calculation of energy changes.

The symmetries of the universe play a fundamental role in shaping the laws of physics. From conservation of energy and momentum to the behavior of particles in quantum fields, symmetries govern how ...

A star’s life cycle satisfies the conservation of energy law. Energy is released as nuclei fuse — this energy is turned into light and neutrinos — invisible, nearly massless particles that ...

In this Closer Look segment, we explore the Conservation of Energy by looking at a football thrown as a projectile at an angle, a student in a pogo stick jumping competition, and a spring ...

Segment 4H: Conservation of Energy We explore the inner workings of a hydroelectric dam as we learn about the law of conservation of energy. The difference between conservative and non ...